#pragma once for our headers plus drive-by formatting

rtgui/fileselectionlistener.h

@@ -16,11 +16,10 @@
  *  You should have received a copy of the GNU General Public License
  *  along with RawTherapee.  If not, see <https://www.gnu.org/licenses/>.
  */
-#ifndef _FILESELECTIONLISTENER_
-#define _FILESELECTIONLISTENER_
+#pragma once
 
-class Thumbnail;
 class BatchQueueEntry;
+class Thumbnail;
 
 class FileSelectionListener
 {
@@ -29,6 +28,3 @@ public:
     virtual bool fileSelected(Thumbnail* thm) = 0;
     virtual bool addBatchQueueJobs(const std::vector<BatchQueueEntry*>& entries) = 0;
 };
-
-#endif
-